Selenium is broadly praised for thyroid, energy, and hair benefits, with 200mcg cited as an effective dose, though some caution about over-supplementation.
Vital Nutrients Selenium 200mcg delivers selenium as selenomethionine, an organically bound form with well-established absorption characteristics, supporting thyroid hormone metabolism, antioxidant enzyme activity, and immune function. This practitioner-oriented formula is suited for individuals seeking straightforward, high-quality selenium supplementation without unnecessary additives.
Why It's Worth Considering: Vital Nutrients is a practitioner-grade brand known for stringent third-party testing and minimal excipients — this single-ingredient, 200mcg dose aligns with widely referenced intake levels used in clinical practice.
For maintenance: 100-200mcg daily (selenomethionine form preferred). For thyroid support: 200mcg. The RDA is 55mcg but most functional medicine practitioners recommend 100-200mcg. Do NOT exceed 400mcg/day — selenium has a narrow therapeutic window and excess causes selenosis (hair loss, nail brittleness, GI issues).
Yes — selenium is critical for thyroid function. It's required for the enzyme that converts inactive T4 to active T3, AND it protects thyroid cells from oxidative damage. In Hashimoto's, 200mcg selenium daily reduces TPO antibodies by 20-40% in clinical trials. It's one of the most evidence-based supplements for thyroid health.
One Brazil nut contains 70-90mcg selenium — so 2 nuts/day provides a therapeutic dose. However, selenium content varies dramatically by soil (some nuts have 10mcg, others have 300mcg). If you rely on Brazil nuts, be cautious about overconsumption — 4-5 large nuts could exceed 400mcg. A supplement provides a consistent, known dose.
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No significant interactions identified. Always consult your healthcare provider.
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
